A Simple logger that does what a logger should do: send your input messages to a series of outputs.
final logger = Logger();
logger.d('debug message');
logger.i('info message');
logger.s('success message');
logger.w('warning message');
logger.e('error', stackTrace: StackTrace.current);
final logger = Logger(
outputs: [
ConsoleOutput(),
ExampleCrashlyticsOutput(),
],
);
Just implement the output class. For example, below is an example crashlytics output.
class ExampleCrashlyticsOutput implements Output {
final FirebaseCrashlytics _crashlytics;
const ExampleCrashlyticsOutput(this._crashlytics);
@override
void log({
required Object? message,
required Level level,
required StackTrace? stackTrace,
required String context,
}) {
if (level.value >= Level.error.value) {
_crashlytics.recordError(message, stackTrace ?? StackTrace.current);
} else {
_crashlytics.log(message.toString());
}
}
}
It is faster than a library like logger because it does not use the stack trace for every log (only if specified). This results in faster logging when no stack trace is used.
Durations for logger_io, 20 debug log (5 times): (1 ms, 2 ms, 2 ms, 1 ms, 2 ms)
Duration for logger, 20 debug log (5 times): (15 ms, 16 ms, 16 ms, 16 ms, 13 ms)